Code Chameleon
Easily format, optimize, cleanup and edit source code and web pages.

EmEditor Text Editor Professional
EmEditor is a text editor for Windows that fully supports Unicode and plug-ins.

CSE HTML Validator Pro
Check HTML, CSS, SEO, PHP, JavaScript, accessibility, links, more

TRichView for Delphi
Components for editing documents with images, tables and hypertext links

CCXI XML Data Island Library
ASP control, JavaScript displays data on the client side using XML data islands